1551501012 has 48 divisors (see below), whose sum is σ = 3882634560. Its totient is φ = 480699648.

The previous prime is 1551501001. The next prime is 1551501019. The reversal of 1551501012 is 2101051551.

It is a self number, because there is not a number n which added to its sum of digits gives 1551501012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1551501019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52113 + ... + 76280.

It is an arithmetic number, because the mean of its divisors is an integer number (80888220).

Almost surely, 2^1551501012 is an apocalyptic number.

1551501012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1551501012 is an abundant number, since it is smaller than the sum of its proper divisors (2331133548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1551501012 is a wasteful number, since it uses less digits than its factorization.

1551501012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128472 (or 128470 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 21.

The square root of 1551501012 is about 39389.0976286586. The cubic root of 1551501012 is about 1157.6679794215.

Adding to 1551501012 its reverse (2101051551), we get a palindrome (3652552563).

The spelling of 1551501012 in words is "one billion, five hundred fifty-one million, five hundred one thousand, twelve".